Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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A Study on Joint Source/Channel Coding for MPEG-4 Video Transmission

MPEG-4 비디오 전송을 위한 결합 소스/채널 부호화에 관한 연구

  • Lee, Woon-Moon (Department of Radio Communication Engineering, Kyung Hee University) ;
  • Sohn, Won (Department of Radio Communication Engineering, Kyung Hee University) ;
  • Lee, Soo-In (Electronics and Telecommunications Research Institute)
  • 이운문 (경희대학교 전파공학과) ;
  • 손원 (경희대학교 전파공학과) ;
  • 이수인 (한국전자통신연구원 전파방송연구소)
  • Published : 2003.06.01
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Abstract

In this paper, we develop an approach toward Joint Source-Channel Coding for MPEG-4(Moving picture Experts Group) based video coding In fixed and mobile reception environment. We have considered channel environment of AWGN and mobile reception. The source coder used MPEG-4 video. the channel coder used RCPC(Rate Compatible Punctured Convolution) and the modulation method used QPSK(Quadrature Phase Shift Keying) modulation. This study determined optimum Trade-off point between source bit rate and channel coding rate In variable channel states. We compared Joint Source/channel Coding method and general constant bit rate transmission. In this results, Joint Source/channel Coding was appeared better performance than constant bit rate transmission.

고정 및 이동수신환경에서 결합 소스/채널 부호화 기법을 MPEG-4(Moving picture Experts Group) 비디오 전송에 적용하여 대역폭 사용 효율을 높이는 방안에 대하여 논하였다. 채널환경은 랜덤잡음환경과 이동수신환경을 고려하였다. 소스부호화기는 MPEG-4 비디오, 채널부호화기는 RCPC(Rate Compatible Punctured Convolution) 그리고 변조방식은 QPSK(Quadrature Phase Shift Keying)를 적용하였다. 이 논문에서는 여러가지 채널상태(Es/No)에 따른 율-왜곡특성에 대해 분석하여 소스비트율과 채널부호율 간에 최적의 상충점(Trade-off point)을 결정하였고, 결합 소스/채널 부호화 기법과 일반적인 고정부호율 전송기법을 비교하여 결합 소스/채널부호화의 효율성을 보였다.

Keywords

References

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